package com.erplan.studentmgt.desktop.elements;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;

public class AppSplashScreen {

	public static void showSplashScreen(Display display) 
	{
		
		final int[] count = new int[] { 1 };
		final Image image = new Image(display, 300, 300);
		
		GC gc = new GC(image);
		gc.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
		gc.fillRectangle(image.getBounds());
		gc.drawText("Student Management", 20, 15);
		gc.dispose();
		
		final Shell splash = new Shell(SWT.ON_TOP);
		final ProgressBar bar = new ProgressBar(splash, SWT.NONE);
		bar.setMaximum(count[0]);
		
		Label label = new Label(splash, SWT.NONE);
		label.setImage(image);
		
		FormLayout layout = new FormLayout();
		splash.setLayout(layout);
		
		FormData labelData = new FormData();
		labelData.right = new FormAttachment(100, 0);
		labelData.bottom = new FormAttachment(100, 0);
		label.setLayoutData(labelData);
		
		FormData progressData = new FormData();
		progressData.left = new FormAttachment(0, 5);
		progressData.right = new FormAttachment(100, -5);
		progressData.bottom = new FormAttachment(100, -5);
		bar.setLayoutData(progressData);
		splash.pack();
		
		Rectangle splashRect = splash.getBounds();
		Rectangle displayRect = display.getBounds();
		int x = (displayRect.width - splashRect.width) / 2;
		int y = (displayRect.height - splashRect.height) / 2;
		splash.setLocation(x, y);
		splash.open();
		
		for (int i = 1; i < 100; i = i + i) {
			bar.setSelection(i);
			try {
				Thread.sleep(200);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		splash.close();
	}
}